... rated current 160A-630A 1 Use HR17 series fuse type isolating switch,rated insulating voltage AC 800V,rated operating voltage 690V,400V ... Parameter2.1Rated insulating voltageAC 800V2.2 Rated operating currentAC 690V AC 400V2.3 Rated heating current160A, 250A, 400A , 630A2.4 ... 315A, 425A2.5 Kind of usege400V:AC-20B, AC-21B, AC-22B, AC-23B; 690V: AC-20B ,AC-21B, AC-22B2.6 Fuse link installed: The fuse ...